The proper muzzle is of medium length, neigh short nor long, but approximately one half the length of the head. It is rounded and fairly broad on the top, falling away abruptly below the eyes. It should be heavy enough to provide good attachment for the upper jaw teeth, but not filled like a fox terrier or bull terrier. It is narrower than the back skull and cheeks, and wedges toward the nose, but the wedge is truncated, and the end of the muzzle is still blunt. Jaws well defined, not hidden by padding flesh. A strong and deep underjaw, with a strong visible chin. The lips are close and even, with no looseness or thick padding. The muzzle is without extra flesh and definitely not wrinkled.